Just read the first half, very good explanations in minimal verbiage. Arc looks beautiful here even if only for the de-parenning of so many CL operators (i.e.

Just read the first half, very good explanations in minimal verbiage. Arc looks beautiful here even if only for the de-parenning of so many CL operators (i.e. let). In fact I'm a little sad to still see so many parens in the code... I guess my whitespace-significant dreams were overreaching.